Three-dimensional kinematics of the lunate, hamate, capitate and triquetrum with type 1 or 2 lunate morphology

Abe, Shingo; Moritomo, Hisao; Oka, Kunihiro; Sugamoto, Kazuomi; Kasubuchi, Kenji; Murase, Tsuyoshi; Yoshikawa, Hideki

doi:10.1177/1753193417744420

Cited by 13 publications

(9 citation statements)

References 23 publications

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“…There were very small 95% CIs in measurements of FE and RUD wrist motion (Figure 5) indicating that the scapholunate motion patterns in our participant population aged 20 to 40 years were very similar. This was an unexpected finding, since two other studies found that differences in lunate morphology affect carpal kinematics (Abe et al., 2017; Bain et al., 2015). The lunate morphology in the participants in our study consisted of 24 type 1 lunates and 18 type 2 lunates, but lunate morphology did not seem to influence scapholunate kinematics in our study.…”

Section: Discussionmentioning

confidence: 66%

A four-dimensional-CT study of in vivo scapholunate rotation axes: possible implications for scapholunate ligament reconstruction

Roo

Muurling

Dobbe

et al. 2019

J Hand Surg Eur Vol

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Additional fixation of the palmar scapholunate interosseous ligament has been advocated to improve the long-term results of dorsal scapholunate interosseous ligament reconstruction. To investigate the validity of this approach, we determined normal scapholunate motion patterns and calculated the location of the scapholunate rotation axis. We hypothesized that the optimal location of the scapholunate interosseous ligament insertion could be determined from the scapholunate rotation axis. Four-dimensional computerized tomography was used to study the wrist motion in 21 healthy participants. During flexion–extension motions, the scaphoid rotates 38° (SD 0.6°) relative to the lunate; the rotation axis intersects the dorsal ridge of the proximal pole of the scaphoid and the dorsal ridge of the lunate. Minimal scapholunate motion is present during radioulnar deviation. Since the scapholunate rotation axis runs through the dorsal proximal pole of the scaphoid, this is probably the optimal location for attaching the scapholunate ligament during reconstructive surgery.

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Section: Discussionmentioning

confidence: 66%

A four-dimensional-CT study of in vivo scapholunate rotation axes: possible implications for scapholunate ligament reconstruction

Roo

Muurling

Dobbe

et al. 2019

J Hand Surg Eur Vol

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“…This would seem to support more ulnarly translated forces in type 2 lunate wrists. 12 However, this more "stable" column, while transferring compression to the triquetrohamate joint, may actually cause shear forces to be transmitted to the area of least resistance, i.e., more radially, into the more mobile scapholunate interosseous ligament (SLIL) area. Furthermore, the forces may differ in the different wrist positions, and while most of the load is transferred ulnarly in ulnar deviation of a type 2 wrist, this may differ in radial or neutral deviation.…”

Section: Discussionmentioning

confidence: 99%

A Preliminary Model of the Wrist Midcarpal Joint

2021

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Background A challenge to deciphering the effect of structure on function in the wrist involves difficulty in obtaining in-vivo information. To provide a platform to study wrist mechanics using in vivo acquired forces, we developed a model of the midcarpal joint based on computed tomography (CT) scans of normal wrists. Finite element analysis (FEA) can enable application of in vivo collected information to an ex vivo model. Objectives The objectives of this study are to (1) create a three-dimensional model of the midcarpal joint of the wrist based on CT scans and (2) generate separate models for the midcarpal joint based on two distinct wrist types and perform a pilot loading of the model. Methods CT scans from a normal patient database were converted to three-dimensional standard template library (STL) files using OsiriX software. Five type 1 and five type 2 wrists were used for modeling. A simulated load was applied to the carpometacarpal joints in a distal-to-proximal direction, and FEA was used to predict force transfer in the wrist. Results There were 33% type 1 and 67% type 2 wrists. The midcarpal joint dimensional measurements estimated from the model had intermediate agreement between wrist type as measured on CT scan and as predicted by the model: 56% Cohen's kappa (95% confidence interval) = 0.221 (0.05–0.5). Surface stress on the carpometacarpal joints is different in type 1 and type 2 wrists. On loading the neutral wrist, the capitolunate angle was 90 degrees in type 1 wrists and 107 degrees in type 2 wrists (p < 0.0001). Conclusions The model predicted differences in movement and force transfer through the midcarpal joint dependent on structural type. This knowledge can improve our understanding of the development of disparate patterns of degeneration in the wrist.

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“…Consideration of carpal bone collision using finite element modeling might yield higher accuracy with a refined model. Additionally, it has been shown that the lunate has two main anatomical shapes, and two different motion paths have been proposed for it; we did not consider effects of bone shapes in our modeling (although we accounted for the size by scaling all carpal bones). Further studies need to examine the influence of the differing shapes of carpal bones on the wrist kinematics.…”

Section: Discussionmentioning

confidence: 99%

Predicting Carpal Bone Kinematics Using an Expanded Digital Database of Wrist Carpal Bone Anatomy and Kinematics

Akhbari

Moore

Laidlaw

et al. 2019

Journal Orthopaedic Research

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The wrist can be considered a 2 degrees-of-freedom joint with all movements reflecting the combination of flexion-extension and radial-ulnar deviation. Wrist motions are accomplished by the kinematic reduction of the 42 degrees-of-freedom of the individual carpal bones. While previous studies have demonstrated the minimal motion of the scaphoid and lunate as the wrist moves along the dart-thrower's path or small relative motion between hamate-capitate-trapezoid, an understanding of the kinematics of the complete carpus across all wrist motions remains lacking. To address this, we assembled an open-source database of in vivo carpal motions and developed mathematical models of the carpal kinematics as a function of wrist motion. Quadratic surfaces were trained for each of the 42carpal bone degrees-of-freedom and the goodness of fits were evaluated. Using the models, paths of wrist motion that generated minimal carpal rotations or translations were determined. Model predictions were best for flexion-extension, radial-ulnar deviation, and volar-dorsal translations for all carpal bones with R 2 > 0.8, while the estimates were least effective for supination-pronation with R 2 < 0.6. The wrist path of motion's analysis indicated that the distal row of carpal bones moves rigidly together (<3°motion), along the anatomical axis of wrist motion, while the bones in the proximal row undergo minimal motion when the wrist moves in a path oblique to the main axes. The open-source dataset along with its graphical user interface and mathematical models should facilitate clinical visualization and enable new studies of carpal kinematics and function.

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Three-dimensional kinematics of the lunate, hamate, capitate and triquetrum with type 1 or 2 lunate morphology

Cited by 13 publications

References 23 publications

A four-dimensional-CT study of in vivo scapholunate rotation axes: possible implications for scapholunate ligament reconstruction

A four-dimensional-CT study of in vivo scapholunate rotation axes: possible implications for scapholunate ligament reconstruction

A Preliminary Model of the Wrist Midcarpal Joint

Predicting Carpal Bone Kinematics Using an Expanded Digital Database of Wrist Carpal Bone Anatomy and Kinematics

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